WO1991002823A1 - Production method of unidirectional electromagnetic steel sheet having excellent iron loss and high flux density - Google Patents
Production method of unidirectional electromagnetic steel sheet having excellent iron loss and high flux density Download PDFInfo
- Publication number
- WO1991002823A1 WO1991002823A1 PCT/JP1989/000826 JP8900826W WO9102823A1 WO 1991002823 A1 WO1991002823 A1 WO 1991002823A1 JP 8900826 W JP8900826 W JP 8900826W WO 9102823 A1 WO9102823 A1 WO 9102823A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- annealing
- flux density
- iron loss
- steel sheet
- magnetic flux
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/125—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest with application of tension
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1272—Final recrystallisation annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
- C21D8/1288—Application of a tension-inducing coating
Definitions
- the present invention relates to a method for producing a unidirectional magnetic steel sheet having a high magnetic flux density, which is excellent in iron loss and whose magnetic domain is controlled on the surface of the steel sheet.
- the present inventor has conducted various studies in order to respond to the above-mentioned demands. As a result of the research, the present inventors have developed a high magnetic flux density unidirectional electromagnetic coil having a zhang coating and a magnetic domain control process in a direction substantially perpendicular to the rolling direction after secondary recrystallization. It was found that by controlling the average particle size of the secondary recrystallized grains within a certain range, remarkably excellent iron loss could be obtained, leading to the present invention.
- the final cold-rolled sheet is subjected to decarburizing annealing, coated with an annealing separator, wound into a coil, subjected to high-temperature finish annealing, removed from the annealing separator, and subjected to flattening annealing.
- tension coating is applied so that the tension per unit cross-sectional area of the steel sheet is 0.7 kg / band 2 or more, after secondary recrystallization, and before tension coating or flattening annealing
- a method of manufacturing a unidirectional electromagnetic steel plate in which a steel plate surface is subjected to an artificial magnetic domain control treatment by controlling the material composition and processing conditions, the average of the secondary recrystallized grains in the rolling plane
- the particle size By adjusting the particle size to 11 to 50 mZm, a method for manufacturing a high magnetic flux density unidirectional electromagnetic plate with excellent magnetic loss and magnetic flux density of 1.88 T or more at ⁇ ⁇ ⁇ ⁇ Pertains to ⁇
- Figure 1 is the magnetic flux density beta 8 and secondary re after subjected to magnetic domain control by laser irradiation on the surface of the grain-oriented electrical ⁇ with Zhang Kakoti ring subjected to high-temperature finish annealing in hula Tsu preparative conditions a steel plate
- FIG. 4 is a view showing the relationship between the average grain size of crystal grains and iron loss W 15 Z 50.
- Fig. 2 shows the flattening after bending ⁇ ⁇ and performing high-temperature finish annealing.
- Figure 8 shows the relationship between the magnetic flux density B8 and the average secondary recrystallized grain size of the magnetic grain density B8 of a grain-oriented electrical steel sheet whose magnetic domain has been controlled by laser irradiation on the surface after applying a tension coating. .
- Figure 3 is a final cold rolling reduction rate, after having been subjected to high-temperature finish annealing in hula Tsu preparative conditions the ⁇ a diagram showing a relationship between flat Hitoshitsubu ⁇ magnetic flux density B B and secondary recrystallized grains is there.
- the horizontal axis is the average particle diameter
- the vertical axis is the magnetic flux density
- B 8 8.
- the symbol (indicated by ⁇ ⁇ ) indicates iron loss W15 / 50.
- the treatment was performed in the same manner as in Experiment I.
- the steel plate was bent at a radius of curvature of 400 mZm in the rolling direction, subjected to high-temperature finish annealing, and the annealing separator was removed. performs flattening annealing of subsequently in a manner similar to experiment I, Zhang Kakoti subjected to ring and laser irradiation were measured an average particle size of the magnetic flux density B 8 and the secondary recrystallized grains.
- the horizontal axis in average particle diameter and the second figure shows £ Figure 2 the relationship B 8 are the average particle size, and the vertical axis as is clear from a B 8 ⁇ Figure 2, were bent ⁇ when performing the high-temperature finish annealing in a state, B 8 beyond Nari average particle diameter is rather large, tended to degradation, the mean particle size was found to degrade significantly B 8 exceeds 50 m Zm .
- B 8 is deteriorated, Therefore than the lambda 1 Figure that the iron loss is degraded - is estimated.
- high-temperature finish annealing requires a high temperature and a long time, it is usually annealed with the end face up and down in a coiled state.
- the radius of curvature of the inner peripheral portion of the coil is approximately equal to or less than OmZm. Increasing the radius of curvature of the coil increases the size of the equipment and is disadvantageous in terms of manufacturing costs.
- high-temperature finish annealing was performed by the usual method of annealing in the state of being wound in a coil form, with tension coating, and a direction substantially perpendicular to the rolling direction after secondary recrystallization. It has been clarified that by controlling the average grain size of secondary recrystallized grains to 11 SOmZm for a high magnetic flux density grain-oriented electrical steel sheet that Was.
- Residue Silicon slab containing elements that are inevitably mixed Is heated at 1350'C for 120 minutes, hot-rolled to a thickness of 1.1 to 5.0 mZm, hot-rolled at 1120'C for 2 minutes, and cooled to 300'C in 30'C seconds and it was cooled to thickness 0.285 MZM, with 75% Eta 2, of 25% N 2 in a humid atmosphere, for 3 minutes at 850 hand, subjected to decarburization annealing, coated with a baked blunt separating agent composed mainly of magnesia, The plate was kept flat, and high-temperature finish annealing was performed.
- the magnetic flux density B 8 of the product and determination of average particle size of the secondary recrystallized grains shows the relationship between cold rolling reduction ratio and B B and flat Hitoshitsubu ⁇ in Figure 3.
- the horizontal axis is the cold rolling reduction ratio and the vertical axis, B 8 and an average particle size.
- C 0.12% or less is desirable. If it exceeds 0.12%, decarburization in decarburization annealing becomes difficult.
- S i 2.5 to 4.5% is desirable. If the content is less than 2.5%, good iron loss cannot be obtained, and if it exceeds 4.5%, the additive property deteriorates.
- Mn 0.030 to 0.200% is desirable. If it is less than 0.030%, the workability deteriorates, and if it exceeds 0.200%, good iron loss cannot be obtained.
- Total of one or two of S or Se preferably 0.01 to 0.06%. If it is less than 0.01% or more than 0.06%, good iron loss cannot be obtained. Acid soluble A £: 0.010 to 0.050% is preferred.
- N 0.0030 to 0.0100% is desirable. If it is less than 0.0030%, secondary recrystallization will be poor, and if it exceeds 0.0100%, blister flaws will occur.
- An average particle diameter of 11 ⁇ 50m Roh m of secondary recrystallization has a surface coating tension per unit sectional area of the steel plate is 0. 7 kg Roh thigh 2 or more, a magnetic flux in the magnetization force 800A / m
- a high-flux-density unidirectional electrical steel sheet with a density of 1.88 T or more and magnetic domain control artificially applied to the steel sheet surface in a direction substantially perpendicular to the rolling direction, and excellent iron loss can be obtained.
- the cause of iron loss deterioration when the average particle size is less than 11 m / m is that, in the case of the magnetic domain control material according to the present invention, fine grain boundaries are detrimental to the magnetic domain formation pattern that minimizes iron loss.
- the sheet was heated for 120 minutes and hot rolled to obtain a hot rolled sheet having a thickness of 0.9 to 4.4 m_m.
- This hot-rolled sheet was annealed at various temperatures of 1000 to 1220'C for 100 seconds, and cooled to 300'C in 35 seconds. After that, it was processed until the final cold rolling by the following manufacturing processes I and II. In the case of Production Process I, final cold rolling was performed immediately after annealing of the hot rolled sheet.
- decarburizing annealing is performed at 850 in a humid atmosphere of 75% H 2 and 25% NZ for 3 minutes, and an annealing release agent mainly composed of magnesia is applied, and the radius of curvature is about 400m /
- the wire was wound into a coil at m and subjected to high-temperature finish annealing.
- heated Chukiri ⁇ care and 75% ⁇ 2, 25% N 2 at a heating rate of 15 Te / time, 1200 'C MadeNoboru was raised, 20 hours annealing at 1200 hand in a hydrogen atmosphere did.
- the annealing separator was removed, and magnetic domain control processing, tension coating, annealing, etc. were performed by the following four methods A, B, C, and D.
- Method A such that the tension per unit cross-sectional area of the steel sheet is 1.
- O KGZ picture 2 performs tension Koti ring, serves as a baking of Cote I ring, a flattening annealing for 30 seconds at 850'C
- the surface of ⁇ ⁇ was irradiated with a pulsed laser in the direction perpendicular to the rolling direction at an energy density of 2.0 J Zc, an irradiation width of 0.25111 °, and an irradiation interval of 5 mZm.
- Sb metal powder was applied and annealed at 800 rpm for 2 hours.
- the surface of the sheet is irradiated with a pulse laser at an energy density of 3.0 J / c irradiation width of 0.S mZn at an irradiation interval of 5 mZm in a direction perpendicular to the rolling direction to form a forsterite layer.
- the part content to dividing better, then immersed for 20 seconds in a 61% nitric acid solution, so that the tension per unit cross-sectional area of ⁇ is 1.0 kg "thigh 2 performs Zhang Kakote fin grayed, co over Te I
- the flattening anneal was performed at 850 mm for 30 seconds to serve as the bonding.
- strain was introduced under a load of 180 kgZ state 2 using a gear type roll with a gear pitch of 8 m / m, a radius of curvature of the gear tip of 100, and a blade inclination of 75 ° to the rolling direction.
- Tension coating was performed so that the tension per unit cross-sectional area was 1.0 kg ran 2, and flattening annealing was performed for 30 seconds at 850 ⁇ (:) while also baking the coating.
- the present invention it is possible to supply a material such as an iron core having a very low iron loss, thereby greatly reducing energy loss of electrical equipment such as a transformer.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE68926457T DE68926457T2 (de) | 1988-02-16 | 1989-08-15 | Herstellungsverfahren von elektroblechen mit goss-textur, die ausgezeichnete eisenverlustwerte und hohe flussdichte haben |
EP89909241A EP0438592B1 (en) | 1988-02-16 | 1989-08-15 | Production method of unidirectional electromagnetic steel sheet having excellent iron loss and high flux density |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63033320A JPH0768580B2 (ja) | 1988-02-16 | 1988-02-16 | 鉄損の優れた高磁束密度一方向性電磁鋼板 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991002823A1 true WO1991002823A1 (en) | 1991-03-07 |
Family
ID=12383267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1989/000826 WO1991002823A1 (en) | 1988-02-16 | 1989-08-15 | Production method of unidirectional electromagnetic steel sheet having excellent iron loss and high flux density |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0438592B1 (ja) |
JP (1) | JPH0768580B2 (ja) |
DE (1) | DE68926457T2 (ja) |
WO (1) | WO1991002823A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0753886B2 (ja) † | 1989-05-13 | 1995-06-07 | 新日本製鐵株式会社 | 鉄損の優れた薄手高磁束密度一方向性電磁鋼板の製造方法 |
DE69706388T2 (de) | 1996-10-21 | 2002-02-14 | Kawasaki Steel Co | Kornorientiertes elektromagnetisches Stahlblech |
EP0892072B1 (en) * | 1997-07-17 | 2003-01-22 | Kawasaki Steel Corporation | Grain-oriented electrical steel sheet excellent in magnetic characteristics and production process for same |
KR101141281B1 (ko) * | 2004-12-28 | 2012-05-04 | 주식회사 포스코 | 후물 방향성 전기강판의 제조방법 |
BR112013002874B1 (pt) * | 2010-08-06 | 2022-05-24 | Jfe Steel Corporation | Chapa de aço elétrica de grão orientado e método para fabricar a mesma |
JP6003197B2 (ja) * | 2012-05-07 | 2016-10-05 | Jfeスチール株式会社 | 磁区細分化処理方法 |
JP7031364B2 (ja) * | 2018-02-26 | 2022-03-08 | 日本製鉄株式会社 | 方向性電磁鋼板の製造方法 |
CN108787940B (zh) * | 2018-07-31 | 2023-12-12 | 立洲(青岛)五金弹簧有限公司 | 一种ω夹、ω夹的成型装置及成型方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS61133321A (ja) * | 1984-11-30 | 1986-06-20 | Nippon Steel Corp | 超低鉄損方向性電磁鋼板の製造方法 |
JPS6250413A (ja) * | 1985-08-30 | 1987-03-05 | Kawasaki Steel Corp | 方向性珪素鋼帯の平たん化焼鈍方法 |
JPS6254085A (ja) * | 1985-08-31 | 1987-03-09 | Kawasaki Steel Corp | 一方向性珪素鋼鈑のフオルステライト絶縁被膜形成方法 |
Family Cites Families (18)
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FR2007129A1 (ja) * | 1968-04-27 | 1970-01-02 | Yawata Iron & Steel Co | |
JPS5037130B2 (ja) * | 1972-08-01 | 1975-12-01 | ||
JPS5413846B2 (ja) * | 1973-06-18 | 1979-06-02 | ||
JPS53129116A (en) * | 1977-04-18 | 1978-11-10 | Nippon Steel Corp | Oriented electromagnetic steel sheet with excellent magnetic characteristic s |
JPS5518566A (en) * | 1978-07-26 | 1980-02-08 | Nippon Steel Corp | Improving method for iron loss characteristic of directional electrical steel sheet |
US4363677A (en) * | 1980-01-25 | 1982-12-14 | Nippon Steel Corporation | Method for treating an electromagnetic steel sheet and an electromagnetic steel sheet having marks of laser-beam irradiation on its surface |
JPS6048886B2 (ja) * | 1981-08-05 | 1985-10-30 | 新日本製鐵株式会社 | 鉄損の優れた高磁束密度一方向性電磁鋼板及びその製造方法 |
JPS5836051B2 (ja) * | 1982-03-14 | 1983-08-06 | 新日本製鐵株式会社 | 電磁鋼板の処理方法 |
JPS6144131A (ja) * | 1984-08-08 | 1986-03-03 | Nippon Steel Corp | 磁区制御された極超低鉄損方向性電磁鋼板の製造方法 |
DE3571464D1 (en) * | 1985-03-05 | 1989-08-17 | Nippon Steel Corp | Grain-oriented silicon steel sheet and process for producing the same |
JPS6256923A (ja) * | 1985-09-06 | 1987-03-12 | Ricoh Co Ltd | 光アイソレ−タ− |
JPS62151511A (ja) * | 1985-12-26 | 1987-07-06 | Kawasaki Steel Corp | 方向性珪素鋼板の鉄損低減方法 |
JPS62161915A (ja) * | 1986-01-11 | 1987-07-17 | Nippon Steel Corp | 超低鉄損の方向性電磁鋼板の製造方法 |
JPS62202024A (ja) * | 1986-02-14 | 1987-09-05 | Nippon Steel Corp | 磁気特性の優れた一方向性電磁鋼板の製造方法 |
US4909864A (en) * | 1986-09-16 | 1990-03-20 | Kawasaki Steel Corp. | Method of producing extra-low iron loss grain oriented silicon steel sheets |
JPH0230740A (ja) * | 1988-04-23 | 1990-02-01 | Nippon Steel Corp | 鉄損の著しく優れた高磁束密度一方向性電磁鋼板及びその製造方法 |
JP3337747B2 (ja) * | 1993-02-26 | 2002-10-21 | キヤノン株式会社 | 電子写真感光体及びそれを有する電子写真装置 |
JPH06254085A (ja) * | 1993-02-28 | 1994-09-13 | Shimadzu Corp | X線ct装置 |
-
1988
- 1988-02-16 JP JP63033320A patent/JPH0768580B2/ja not_active Expired - Lifetime
-
1989
- 1989-08-15 EP EP89909241A patent/EP0438592B1/en not_active Revoked
- 1989-08-15 WO PCT/JP1989/000826 patent/WO1991002823A1/ja not_active Application Discontinuation
- 1989-08-15 DE DE68926457T patent/DE68926457T2/de not_active Revoked
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61133321A (ja) * | 1984-11-30 | 1986-06-20 | Nippon Steel Corp | 超低鉄損方向性電磁鋼板の製造方法 |
JPS6250413A (ja) * | 1985-08-30 | 1987-03-05 | Kawasaki Steel Corp | 方向性珪素鋼帯の平たん化焼鈍方法 |
JPS6254085A (ja) * | 1985-08-31 | 1987-03-09 | Kawasaki Steel Corp | 一方向性珪素鋼鈑のフオルステライト絶縁被膜形成方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0438592A4 * |
Also Published As
Publication number | Publication date |
---|---|
JPH01208421A (ja) | 1989-08-22 |
EP0438592A4 (en) | 1993-10-20 |
DE68926457D1 (de) | 1996-06-13 |
EP0438592B1 (en) | 1996-05-08 |
DE68926457T2 (de) | 1997-01-02 |
JPH0768580B2 (ja) | 1995-07-26 |
EP0438592A1 (en) | 1991-07-31 |
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